INSECT ABDOMEN

primary segment

secondary segment

Insect Abdomen - segmentation

Insect Abdomen

tergum

sternum

pleural membrane

T5 T6T7 T8

T9T10

T11

cerci

cerci

Insect abdomen - Primary appendages

paraproct

epiproct

Insect abdomen - Primary appendages

Cerci

Insect abdomen - Primary appendages

Cerci - modfied as claspers

Male Odonata

Insect abdomen - Primary appendages

Cerci - modfied as claspers

Male Phasmida(stick insects)

Insect abdomen - Primary appendages

Cerci - modfied as caudal gills

Odonata Larvae

Insect abdomen - Secondary appendages

Abdominal gills - in aquatic larvae

Ephemeroptera

Trichoptera

Megaloptera

Insect abdomen - Secondary appendages

Prolegs - Lepidoptera larvae

Prolegs

Development of Genitalia

Insect Abdomen - Generalized Female Genitalia

gonostyle (gonoplac)

gonapophysis 8

gonapophysis 9

gonocoxite 9gonocoxite 8

gonapophysis 9gonapophysis 8

gonostyle (gonoplac)gonapophysis 9

gonapophysis 8gonocoxite 9

gonocoxite 8gonopore

cercus

anus

Variations on a theme!

Katydid ovipositor

Other Modifications for Oviposition

Diptera - Musca

Ichneumon wasp ovipositor

Hymenoptera - Stinger

Hymenoptera - Stinger

gonoplac

Tergum 9

first gonapophysis (lancet)

second gonapophysis (stylet)

Hymenoptera - Stinger

stylet

lancet

Poison canal

lancet

Insect Abdomen - Generalized Male Genitalia

cercus

anus

gonostylus

gonocoxa

aedeagus